I can recommend the Storz & Bickel 'Mighty' (by same makers as the Volcano) — perhaps plus a pack of spare parts / accessories (so one can postpone cleaning of

I can recommend the Storz & Bickel 'Mighty' (by same makers as the Volcano) — perhaps plus a pack of spare parts / accessories (so one can postpone cleaning of the cooling / top part of the unit). Although, sure, it is expensive, as you say, but it's very good. And no matter how gunked up the top cooling part of the unit might get, it will never not turn on/off. I don't find the maintenance of the unit to be a big deal (particularly having an extra top /etc), but as always with such things, YMMV.